US4784127A - Device for fixing the fractured ends of a bone - Google Patents

Device for fixing the fractured ends of a bone Download PDF

Info

Publication number
US4784127A
US4784127A US06/837,275 US83727586A US4784127A US 4784127 A US4784127 A US 4784127A US 83727586 A US83727586 A US 83727586A US 4784127 A US4784127 A US 4784127A
Authority
US
United States
Prior art keywords
nail
bone
opening
openings
length dimension
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/837,275
Other languages
English (en)
Inventor
Claus Mattheck
Martin Borner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Forschungszentrum Karlsruhe GmbH
Original Assignee
Kernforschungszentrum Karlsruhe GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kernforschungszentrum Karlsruhe GmbH filed Critical Kernforschungszentrum Karlsruhe GmbH
Assigned to KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH WEBERSTRASSE 5 reassignment KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH WEBERSTRASSE 5 ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BORNER, MARTIN, MATTHECK, CLAUS
Application granted granted Critical
Publication of US4784127A publication Critical patent/US4784127A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary devices, e.g. pins or nails
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary devices, e.g. pins or nails
    • A61B17/7283—Intramedullary devices, e.g. pins or nails with special cross-section of the nail

Definitions

  • the present invention relates to a device for fixing the fractured ends of a bone in a living body by means of a nail or a plate which is connected with the bone.
  • Marrow nailing and the external application of long plates are generally known and medically tested procedures for fixing fractures in long bones.
  • the nails generally, either have a continuous slot and a cloverleaf-type cross section, or have a circular cross section and a slot which ends in the upper region of the nail.
  • the significant drawback of a nail having a continuous slot is that, on the one hand, for biomechanical reasons and due to the provision of the slot and the requirements for elasticity, the nail has a cloverleaf configuration but, on the other hand, comes into contact with the bone wall only in very limited longitudinal regions, i.e. is lacking as regards transverse clamping in the femur.
  • an improved device for holding together the fractured ends of a bone in a living body includes an elongate holding member arranged to be secured to the bone and provided, for this purpose, with openings for holding connecting elements, with a certain elasticity being retained, and reinforcement members forming a unit with the holding member, extending in the length direction of the holding member and disposed along opposite sides of each opening.
  • FIGS. 1 and 2 are axial end views of two embodiments of nails according to the invention.
  • FIG. 3 is a perspective view of the embodiment of FIG. 1.
  • FIG. 4 is a perspective detail view of a portion of an embodiment of a plate according to the invention.
  • FIGS. 1 and 2 are end views of two embodiments of hollow nails 1 according to the invention.
  • Each nail 1 has a continuous slot 2 which extends over its full length, i.e. from its head to its tip.
  • the inner and outer peripheries of each embodiment are basically circular.
  • Each nail is composed of a nail wall 5 which is provided with pairs of openings 3 and 4 spaced a defined distance axially along nail 1.
  • Each pair of openings is provided to receive a transverse bolt, interlocking element or screw 6 to fix nail 1 in the interior of a bone 7 (not shown in detail) in an elastic manner with respect to the bone.
  • the axial spacing between pairs of openings 3, 4 is selected according to principles known in the art.
  • reinforcements 10 and/or 11 at least in the region of the openings 3 and 4, on the outer wall face 8 and/or the inner wall face 9, on both sides of openings 3 and 4, extending in the axial direction of nail 1.
  • These reinforcements have a bead shape. Length, thickness, width and other dimensions of reinforcements 10, 11 depend on the material of nail 1 and the requirements to be met.
  • FIG. 2 differs from that of FIG. 1 with regard to the shape of external reinforcements 10 and the provision of internal reinforcements 11.
  • reinforcements 10 and opening 3 The physical relationship between reinforcements 10 and opening 3, for example, is shown again more clearly in FIG. 3.
  • the radial thickness of reinforcements 10 and 11 is preferably 1.05 to 3 times this wall thickness.
  • Openings 3 and 4 required by this structure produce stress concentrations which could reduce load carrying capability.
  • a further feature of the present invention involves the provision, in the vicinity of each opening 3, 4, of at least one further relief bore 17 which is spaced along the nail axis from a respective opening 3 or 4 and may be above or below the associated opening.
  • the shape, size and position of relief bore 17 are optimized in such a manner that the stress peaks occurring at each bore 17 equals, as closely as possible, the reduced stress at the associated opening 3, 4.
  • the diameter d' of each relief bore 17, should range between 1/4 d ⁇ d' ⁇ d, where d is the diameter of the associated opening 3 or 4.
  • the distance b from the center of an opening 3 or 4 and to the center of its associated relief bore 17 is preferably in the range of d ⁇ b ⁇ 3d.
  • Reinforcements 10 and 11 are shaped and dimensioned to take into account that nail 1 must have sufficient elasticity to enable it to be safely hammered into the interior of a bone over a slightly curved path without risk of breakage to the bone.
  • FIG. 4 shows part of an embodiment of a plate 12 according to the invention which is fixed externally to a bone 7 by means of screws passing through holes, or openings, 13 that are analogous to openings 3 and 4 of FIGS. 1-3.
  • plate 12 is provided with mutually parallel, axially extending reinforcements 14 and 15 which extend, precisely like reinforcements 10, 11 in the example of nail 1 according to FIGS. 1 to 3, at least in the region of hole 13, along both sides of the or each hole 13.
  • These reinforcements 14, 15 may also be produced by cutting a groove 16 along an initially thick plate 12 so that groove 16 extends a sufficient distance beyond holes 13.
  • a typical embodiment of plate 12 has a thickness, i.e. in the region of groove 16, between 2 and 7 mm, and a width between 5 and 25 mm.
  • the thickness of reinforcements 14 and 15 corresponds to the radial thickness of reinforcements 10 and 11.
  • a relief bore 17' is disposed above or below hole 13 and the preferred values for b, d and d' are as described above with reference to FIG. 3.
  • a further relief bore 17 (not shown) should be provided, for reasons of symmetry of the flow of forces, at the other side of hole 13.
  • Reinforcements 14 and 15 are shaped and dimensioned to assure that plate 12 has sufficient elasticity to not interfere with the bore healing process. Some pressure, or load, must exist between the fractured bone ends in order for healing to proceed normally. If the fracture region were supported completely rigidly, healing will be delayed.
  • the indication herein that the nail or plate is contracted so that a certain elasticity is retained means that the device must be hard enough to maintain the fractured bone parts in position relative to one another, while the plate must be soft enough to enable the fractured ends to press together and the nail must be soft enough to be hammered in and follow a slightly curved path.
  • the required elasticity and the manner of achieving it are well known in the art.
  • the overall length of nail 1 or plate 12 is selected according to principles known in the art on the basis of the specific application.
  • the size, shape and position of bores 17' are optimized in such a manner that the stress peaks occurring at bores 17' equal, as closely as possible, the reduced stress at openings 13.
  • the reinforcements may be located directly adjacent the boundaries of openings 3, 4, or, as shown in FIG. 4, may slightly overlap those boundaries.
  • Nail 1 and plate 12 may be made of a suitable biocompatible material such as a biocompatible stainless steel or a biocompatible fiber reinforced composite.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
US06/837,275 1986-01-18 1986-03-07 Device for fixing the fractured ends of a bone Expired - Lifetime US4784127A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863601344 DE3601344A1 (de) 1986-01-18 1986-01-18 Vorrichtung zur fixierung der frakturenden eines knochens
DE3601344 1986-01-18

Publications (1)

Publication Number Publication Date
US4784127A true US4784127A (en) 1988-11-15

Family

ID=6292095

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/837,275 Expired - Lifetime US4784127A (en) 1986-01-18 1986-03-07 Device for fixing the fractured ends of a bone

Country Status (5)

Country Link
US (1) US4784127A (enrdf_load_stackoverflow)
JP (1) JPS62172942A (enrdf_load_stackoverflow)
AT (1) AT399648B (enrdf_load_stackoverflow)
DE (1) DE3601344A1 (enrdf_load_stackoverflow)
FR (1) FR2593057A1 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4997446A (en) * 1989-09-14 1991-03-05 Intermedics Orthopedics, Inc. Method and apparatus for osseous contour reconstruction
WO1998023215A1 (en) 1996-11-27 1998-06-04 Mayer Paul W Intramedullary rod system using modular cutting splines
US6120504A (en) * 1998-12-10 2000-09-19 Biomet Inc. Intramedullary nail having dual distal bore formation
US6123709A (en) * 1997-07-25 2000-09-26 Jones; Andrew R. Bone buttress plate and method of using same
US20100010490A1 (en) * 2008-07-09 2010-01-14 Amei Technologies, Inc. Ankle arthrodesis nail and outrigger assembly
US20110054473A1 (en) * 2008-07-09 2011-03-03 Amei Technologies, Inc. Ankle arthrodesis nail and outrigger assembly
EP2731553A4 (en) * 2011-07-15 2015-04-15 Smith & Nephew Inc REDUCTION OF IMPLANT LOAD ZONES
US20170027624A1 (en) * 2014-04-11 2017-02-02 Smith & Nephew, Inc. Dmls orthopedic intramedullary device and method of manufacture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618323B1 (fr) * 1987-07-21 1994-04-15 Landos Applic Orthopediques Fses Tige d'enclouage centro-medullaire

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609723A1 (de) * 1976-01-12 1977-07-21 Sampson Corp Knochennagel
CH611147A5 (en) * 1977-01-07 1979-05-31 Mueller Kurt Osteosynthesis compression plate
US4297993A (en) * 1978-02-16 1981-11-03 Howmedica International, Inc.-Zweigniederlassung, Kiel Aid for osteosynthesis
EP0118778A1 (de) * 1983-03-09 1984-09-19 HOWMEDICA INTERNATIONAL, INC. Zweigniederlassung Kiel Verriegelungsnagel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE913228C (de) * 1943-12-14 1954-06-10 Dr Med H C Ernst Pohl Quer elastische Innenschiene fuer Roehrenknochen
US3695259A (en) * 1970-11-10 1972-10-03 Clyde E Yost Bone plate
AT384359B (de) * 1981-12-01 1987-11-10 Ender Hans Georg Knochennagel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609723A1 (de) * 1976-01-12 1977-07-21 Sampson Corp Knochennagel
CH611147A5 (en) * 1977-01-07 1979-05-31 Mueller Kurt Osteosynthesis compression plate
US4297993A (en) * 1978-02-16 1981-11-03 Howmedica International, Inc.-Zweigniederlassung, Kiel Aid for osteosynthesis
EP0118778A1 (de) * 1983-03-09 1984-09-19 HOWMEDICA INTERNATIONAL, INC. Zweigniederlassung Kiel Verriegelungsnagel

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4997446A (en) * 1989-09-14 1991-03-05 Intermedics Orthopedics, Inc. Method and apparatus for osseous contour reconstruction
WO1998023215A1 (en) 1996-11-27 1998-06-04 Mayer Paul W Intramedullary rod system using modular cutting splines
US5976137A (en) * 1996-11-27 1999-11-02 Mayer; Paul W. Intramedullary rod system using modular cutting splines
US6123709A (en) * 1997-07-25 2000-09-26 Jones; Andrew R. Bone buttress plate and method of using same
US6120504A (en) * 1998-12-10 2000-09-19 Biomet Inc. Intramedullary nail having dual distal bore formation
US20110054473A1 (en) * 2008-07-09 2011-03-03 Amei Technologies, Inc. Ankle arthrodesis nail and outrigger assembly
US20100010490A1 (en) * 2008-07-09 2010-01-14 Amei Technologies, Inc. Ankle arthrodesis nail and outrigger assembly
US8328807B2 (en) 2008-07-09 2012-12-11 Icon Orthopaedic Concepts, Llc Ankle arthrodesis nail and outrigger assembly
US8414584B2 (en) 2008-07-09 2013-04-09 Icon Orthopaedic Concepts, Llc Ankle arthrodesis nail and outrigger assembly
US9226783B2 (en) 2008-07-09 2016-01-05 Icon Orthopaedic Concepts, Llc Ankle arthrodesis nail and outrigger assembly
EP2731553A4 (en) * 2011-07-15 2015-04-15 Smith & Nephew Inc REDUCTION OF IMPLANT LOAD ZONES
US9918756B2 (en) 2011-07-15 2018-03-20 Smith & Nephew, Inc. Reducing implant stress zones
US20170027624A1 (en) * 2014-04-11 2017-02-02 Smith & Nephew, Inc. Dmls orthopedic intramedullary device and method of manufacture
US12128479B2 (en) 2014-04-11 2024-10-29 Smith & Nephew, Inc. DMLS orthopedic intramedullary device and method of manufacture

Also Published As

Publication number Publication date
JPS62172942A (ja) 1987-07-29
JPH0465692B2 (enrdf_load_stackoverflow) 1992-10-20
FR2593057A1 (fr) 1987-07-24
ATA38186A (de) 1994-11-15
DE3601344A1 (de) 1987-07-23
AT399648B (de) 1995-06-26
DE3601344C2 (enrdf_load_stackoverflow) 1993-09-09

Similar Documents

Publication Publication Date Title
EP1773218B1 (en) Bone plate
US6261290B1 (en) Osteosynthesis auxilliary for the treatment of subtrochanteric, peritrochanteric and femoral-neck fractures
US6454770B1 (en) Symmetrical bone plate
FI101448B (fi) Seinämänvahvuudeltaan vaihteleva ydinnaula
KR101131253B1 (ko) 뼈판
US8834532B2 (en) Plate for the treatment of bone fractures
US4838252A (en) Osteosynthetic compression plate
US5562666A (en) Method for treating intertrochanteric fracture utilizing a femoral fracture device
US4403607A (en) Compatible internal bone fixation plate
US8968368B2 (en) Plate and screws for treatment of bone fractures
CA1160927A (en) Compatible internal bone fixation plate
US5336224A (en) Bone fixation plate
JP4323434B2 (ja) 髄内釘
US4784127A (en) Device for fixing the fractured ends of a bone
US5167663A (en) Femoral fracture device
US4973332A (en) Attachment for femur sliding screw plate
US20060015103A1 (en) I-beam configuration bone plate
EP0411273A1 (en) Osteosynthetic assembly with twist fixation plate
US20020058940A1 (en) Bone plate
JP2003524493A (ja) 骨髄内結合ネジ
KR20110028620A (ko) 골절된 장뼈 내로 삽입되는 내부 골수 네일
KR20050023306A (ko) 뼈 고정 요소
JPH02274243A (ja) 骨折部分固定装置
KR20080077154A (ko) 골고정수단을 수용하기 위한 관통홀을 구비하는 골고정장치
US8197520B2 (en) Bone loss plate

Legal Events

Date Code Title Description
AS Assignment

Owner name: KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH WEBERSTRASSE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:MATTHECK, CLAUS;BORNER, MARTIN;REEL/FRAME:004537/0642

Effective date: 19860404

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 12